Low-energy electron diffraction LEED patterns

Figure 10.14 (A) Low-energy electron diffraction (LEED) pattern for (8x2) TiCyMo(112). (B) STM images (200 x 200 nm) of the (8x2) TiOx Mo(112) surface. / = 0.18 nA, V = -1.7V (inset 25 x 25 nm, / = 0.18 nA, V = +1.2 V). (C) Structural model, top and side view of the (8x2) TiO Mo(112) surface. The oxygen atoms are omitted for clarity. (Reprinted from Chen, M.S. and Goodman, D.W., Science, 306, 525-555, 2004 Chen, M.-S. et al., Surf. Sci., 581, L115-L121, 2005. Copyright 2004. With permission from AAAS.)...

FIG. 9.16 Low-energy electron diffraction (LEED) patterns for clean metal surfaces and surfaces with adsorption (a) clean W(100) surface (b) W(100) with adsorbed oxygen (c) W(100) with adsorbed hydrogen and (d) clean Pt(lll). (Figs. 19.16a-19.16c reprinted with permission from P. J. Estrup, In Modem Diffraction and Imaging Techniques in Materials Science (S. Amelincks, R. Gevers, G. Remaut, and J. Van Landuyt, Eds.), North Holland, Amsterdam, Netherlands, 1970 Fig. 9.16d reprinted with permission of Somorjai 1981.)... 

Fig. 5.1 Phase diagram of (R,R)-iaxlanc acid on Cu(llO) with the corresponding low energy electron diffraction (LEED) patterns for the primary phases observed...

Fig. 2. Low-energy electron diffraction (LEED) patterns for Pd(l 1 l)-(V3x V3)R30°-l adlattices before and after anodic dissolution of approx. 30 monolayers of Pd surface atoms. Beam energy = 60 eV beam current = 2pA.

FIGURE 1.2 (a-d) Low-energy electron diffraction (LEED) patterns from graphene on SiC(0001) obtained... 

The (100) surface of a TMC is a neutral surface composed of equal numbers of metal and carbon atoms (Fig. 1). All the TMC(IOO) clean surfaces prepared in ultrahigh vacuum conditions show (1 X 1) low-energy electron diffraction (LEED) patterns, and no lateral reconstruction has been found. However, LEED I-V analysis studies of the TaC(lOO) (3,4) and HfC(lOO) (3) surfaces have revealed that rippled reconstructions are brought about on these surfaces. The rippled reconstruction includes displacements of surface atoms vertical to the surface the metal atoms and carbon atoms are uniformly displaced inward and outward, respec-... 

Analysis Techniques. The low energy electron diffraction (LEED) patterns were obtained with Princeton Research Instruments, Inc. reverse view optics. Meiss spectra (MS) were acquired with a Leybold-Inficon, Inc. quadrupole residual gas... 

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